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Finding the Fourth Proportional to 243,143.77, 335,543.68 and 134,247.74

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Solution

The fourth proportional to 243,143.77, 335,543.68 and 134,247.74 is: 185,264.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,143.77 : 335,543.68 = 134,247.74 : x
  2. Step 2: Convert to fraction form
    243,143.77/335,543.68 = 134,247.74/x
  3. Step 3: Cross multiply
    243,143.77x = 335,543.68 × 134,247.74
  4. Step 4: Simplify right side
    243,143.77x = 45,045,981,843.84
  5. Step 5: Solve for x
    x = 45,045,981,843.84/243,143.77
  6. Step 6: Final answer
    x = 185,264.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.